Home / 78,718,631.70-118,112,050.35-42,284,513.10

Finding the Fourth Proportional to 78,718,631.70, 118,112,050.35 and 42,284,513.10

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Solution

The fourth proportional to 78,718,631.70, 118,112,050.35 and 42,284,513.10 is: 63,445,088.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,718,631.70 : 118,112,050.35 = 42,284,513.10 : x
  2. Step 2: Convert to fraction form
    78,718,631.70/118,112,050.35 = 42,284,513.10/x
  3. Step 3: Cross multiply
    78,718,631.70x = 118,112,050.35 × 42,284,513.10
  4. Step 4: Simplify right side
    78,718,631.70x = 4,994,310,540,292,435
  5. Step 5: Solve for x
    x = 4,994,310,540,292,435/78,718,631.70
  6. Step 6: Final answer
    x = 63,445,088.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.